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prod(G) Scilab Function prod(G)
NAME
prod - product
CALLING SEQUENCE
y=prod(x)
y=prod(x,'r') or y=prod(x,1)
y=prod(x,'c') or y=prod(x,2)
PARAMETERS
x : real or complex vector or matrix
y : real or complex scalar or matrix
DESCRIPTION
For a vector or a matrix x, y=prod(x) returns in the scalar y the prod of
all the entries of x, , e.g. prod(1:n) is n!
y=prod(x,'r') (or, equivalently, y=prod(x,1))computes the rows elementwise
product of x. y is the row vector: y(i)=prod(x(i,:)).
y=prod(x,'c') (or, equivalently, y=prod(x,2)) computes the columns element-
wise product of x. y is the column vector: y(i)=prod(x(:,i)).
prod is not implemented for sparse matrices.
EXAMPLE
A=[1,2;0,100];
prod(A)
prod(A,'c')
prod(A,'r')
SEE ALSO
sum, cumprod
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